Sash-lock.



No. 803,302. PATENTED 00T. 31, 1905. W. H. MULLINS 6L W. G. HARE.

SASH LOCK.

APPLICATION FILED DBo.2a,19o4.

111111 Inv/111111111111111 WITNESSES.

INVENTORS.

ITED STATES PATENT OFFICE.

WILLIAM H. MULLINS AND WILL O. HARE, OF SALEM, OHIO.

SASH-LOCK.

Specification of Letters Patent.

Eatented Oct. 31, 1905.

Application led December 28, 1904. Serial No. 238,622.

To @ZZ whom it may concern:

Be it known that we, WILLIAM H. MULLINs and WILL O. HARE, residents ofSalem, in the county of Oolumbiana and State of Ohio, have invented anew and useful Improvement in Sash-Locks; and we do hereby declare thefollowing to be a full, clear, and exact description thereof.

Our invention relates to sash-locks, and more especially locks for heavywindows which are mounted to swing on trunnions or pivots.

The object of our invention is to provide a lock for this character ofwindow and means for unlocking the same which will serve also to startthe opening movement of the window.

In many fireproof buildings the windows are provided with metallicsashes and otherwise are very heavy. Many such windows are mounted toswing on horizontal pivots o1' trunnions. If such heavy windows bind intheir jam bs or frames, it requires considerable power to start the samein their opening movements.

Our invention is intended especially for windows of the character justdescribed; and the object is to provide a simple and strong lock for thesashes thereof and which is so arranged that the unlocking of the windowwill also start the same in its opening movement.

To this end the invention consists, generally p stated. in a lockcomprising two members,

one of which is a locking-dog and is mounted on the window-frame and theother being an unlockinglever mounted on the sash and adapted to engagethe dog and move it out of engagement with the sash and then to comeinto engagement with the frame and act as a lever to start the sash inits opening movement.

The invention also consists in details of construction which will behereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical section through awindow-frame, showing our invention applied thereto. Fig. 2 is a similarView of a portion thereof on an enlarged scale, and Fig. 3 is aperspective detail view of a portion of the sash-lock.

Our invention has been shown applied to a window having a lower sash 1and an upper sash 2, although it will apply to a window having a singlesash. These sashes are mounted in the frame 3 upon horizontal trunnionsor pivots 4 and in opening swing on said pivots, as indicated on thelower portion of Fig. 1. The sashes and frames may be of the usual orany desired construction, those shown in the drawings being made ofpressed sheet metal, as is now the practice with iireproofconstructions. This, however, forms no part of the present invention.

The sash-lock comprises a locking-dog 6, which for the upper sash ismounted on the upper portion or lintel 7 of the window-frame and for thelower sash is mounted upon a cross-bar 8. This locking-dog is pivotedbetween a pair of ears 9, secured to a base-plate 19, which in turn issecured to the windowframe or cross-bar. The end of the dog projectsthrough a slot in the plate 10 and projects downwardly, as at 12, toengage the upper rail 13 of the sash or a suitable projection thereon.This dog on its lower edge is provided with a cam-face 15.

The interlocking device consists of a lever 17, pivoted between suitableears 18, secured to la base-plate 19, which in turn is secured to theupper rail 13 of the sash. To the lower end of the lever 17 is connecteda suitable chain, cord, rod, or other operating means 20. The upper endof this lever is provided with a finger or projection 21, which isarranged to engage the cam-face 15 on the dog 6.

To unlock the window, the chain or cord 2O is pulled in the direction ofthe arrow 23, thus swinging the lever 17 about its pivot and causing thefinger 21 to ride along the cam-face 15 on the lower edge of the dog 6.This causes the inner end of said dog to be raised out of engagementwith the upper rail of the window-sash, thus unlocking the latter. rlheupper end 21 of the lever 17 will then come against the base-plate 10 orother stationary part of the window-frame, and by continuing to pull onthe chain 2() this lever will act to pry the window-sash open, so thatthe sash will be started on its opening movement by a minimumexpenditure of power. This is an im portant consideration, as thefriction which must be overcome in starting the window is sometimesquite great. After being started the window willy move quite easily.

The lower face 24 of the inner end 12 of the locking-dog is so curvedthat when the window is swung back to its closed position it willautomatically raise the dog and pass beyond the same, and the latterwill then by gravity fall down into place and lock the window.

The sash-lock described is simple of con- IOO IIO

struction and can be cheaply manufactured. It not onlT serves as anefficient sash-lock,

I but also as a convenient means for starting vIo the opening movementof the window. Various modllications in details of Construction can bemade wlthout departing from the spirlt of our invention.

What we claim isl. Alock for swingingsashes comprising a locling-dogmovably mounted on the frame and arranged to engage the sash, andareleasing-lever mounted on the sash and arranged to engage the dog andmove the same out of engagement with the sash.

2. A lock for swinging sashes comprising a locking-dog movably mountedon the frame and arranged to engage the sash, and a releasing-levermounted on the Sash and arranged to engage the dog and move the same outof engagement with the sash and thereafter to engage a fixed part of theframe and start the Sash in its opening movement.

3. A lock for swinging sashes comprising a locking-dog' movably mountedon the frame and arranged to engage the sash and provided with acam-face, a releasing-lever pivoted to the sash and having a projectionadapted to engage the Cam-face on the dog and move the same out ofengagement with the sash.

4. A lock for swinging sashes comprising a locking-dog movably mountedon the frame and arranged to engage the sash and provided With acam-'faceand a releasing-lever pivoted to the sash and having aprojection arranged to engage the cam-face on the dog and move the .sameout of engagement with the sash and then to Contact with a stationaryportion of the frame and start the sash in its opening movement.

5. A look for swinging sashes comprising a member arranged to lock thesash to the frame, and a releasing-lever mounted on the sash andarranged to engage said locking member and move the same to disengagethe sash from the frame, and thereafter to engage a liXed part of theframe and start the sash in its opening movement.

6. A look for Swinging sashes comprising a pair ot' ears secured to theframe, a lockingdog pivoted between said ears and arranged to engage thesash and provided with a cam on its lower face. a pair of ears securedto the Sash, an unlocking-lever pivoted between said ears and having aprojection arranged to engage the locking-dog and move the Same out ot'engagement with the sash, and actuating means connected to said lever.

ln testimony whereofl we. the said XVILLIAM H. MULLINS and WILL C. HABE,have hereunto set our hands.

VILLIAM H. MULL'INS. WILL C.' HARE.

Witnesses:

F. W. WAIN'rnn, ROBERT C. ToTTEN.

